CN106271033A - A kind of tin bronze and the diffusion welding method of steel welding construction - Google Patents
A kind of tin bronze and the diffusion welding method of steel welding construction Download PDFInfo
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- CN106271033A CN106271033A CN201610736511.9A CN201610736511A CN106271033A CN 106271033 A CN106271033 A CN 106271033A CN 201610736511 A CN201610736511 A CN 201610736511A CN 106271033 A CN106271033 A CN 106271033A
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- welding
- tin bronze
- steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
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Abstract
The invention discloses the diffusion welding method of a kind of tin bronze and steel welding construction, it is characterized in that, carry out in the steps below: 1. according to the multiple parts of figure paper conversion, the solder side of multiple parts is carried out oil removing derust process laggard row be assembled to form welding molectron, multiple parts include steel matrix, tin bronze plate and closed end cap；2. welding molectron is put in the middle of the lower supporting plate in vacuum diffusion bonding equipment burner hearth, separate with graphite paper between welding molectron and gripper shoe；3. by the vacuum degree control in vacuum diffusion bonding equipment 1.0 × 10‑3～1.0 × 10‑4Pa, by a liter gentle pressurized treatments；4. lower the temperature, pickup.The present invention can realize the composition of tin bronze QSn10 23 and not run off, it is ensured that its stable material quality；The casting flaw of tin bronze QSn10 23 can be eliminated to a certain extent, it is ensured that after weldment heat treatment, Copper substrate does not ftractures.
Description
Technical field
The present invention relates to the Diffusion Welding of a kind of foreign material, particularly a kind of tin bronze QSn10-2-3 welds knot with steel
The diffusion welding method of structure.
Background technology
The hydraulic pump/motor of China's Aero-Space equipment, the part friction pair material such as rotor and crawler shoe generally uses copper and closes
Gold, i.e. under part operating mode, fretting wear seriously locates to adhere to one layer of excellent copper alloy of abrasion resistance as wearing course, and this resists
Mill layer typically uses Diffusion Welding to realize with the connection of part base solid (high-quality structural steel).Continuous liter along with Aero-Space equipment
Level, it is also proposed requirements at the higher level to matched hydraulic pump/motor performance, and wherein the abrasion resistance of friction pair material decides
In the service life of product, the abrasion resistance more high product life-span is the longest, otherwise the shortest.Select the tin bronze that abrasion resistance is excellent
The QSn10-2-3 original copper alloy of replacement can meet as friction pair material equips use requirement, but tin bronze QSn10-2-3 and steel
Existing diffusion welding method is used to there is ingredients from lossing and the problem of post weld heat treatment Copper substrate cracking.
Summary of the invention
It is an object of the invention to, it is provided that a kind of tin bronze and the diffusion welding method of steel welding construction.The present invention can be real
The composition of existing tin bronze QSn10-2-3 does not runs off, it is ensured that its stable material quality；Tin bronze QSn10-can be eliminated to a certain extent
The casting flaw of 2-3, it is ensured that after weldment heat treatment, Copper substrate does not ftractures.
Technical scheme: a kind of tin bronze and the diffusion welding method of steel welding construction, it is characterised in that press
State step to carry out:
1. according to the multiple parts of figure paper conversion, the solder side of multiple parts is carried out oil removing derust process laggard luggage join shape
Becoming welding molectron, multiple parts include steel matrix, tin bronze plate and closed end cap；
2. welding molectron is put in the middle of the lower supporting plate in vacuum diffusion bonding equipment burner hearth, weld molectron and prop up
Separate with graphite paper between fagging；
3. by the vacuum degree control in vacuum diffusion bonding equipment 1.0 × 10-3～1.0 × 10-4Pa, by a liter gentleness
Pressurized treatments；
4. lower the temperature, pickup.
In the diffusion welding method of aforesaid tin bronze and steel welding construction, described step 1. in assembly method be, will
Tin bronze plate is put in the groove of steel matrix, and between solder side, interpolation pure nickel paper tinsel is as welding transition layer, by closing with groove
End cap covers on tin bronze plate, obtains the welding molectron assembled.
Aforesaid tin bronze is with the diffusion welding method of steel welding construction, and the bottom surface of the groove of described steel matrix is circular
The junction to be welded of plane, periphery is taper seat, and inner bottom surface and the sidewall of closed end cap coordinate with tin bronze plate, and exterior side wall is
The taper seat coordinated with steel matrix periphery, and steam vent radially it is provided with in bottom.
Aforesaid tin bronze is with the diffusion welding method of steel welding construction, and the described gentleness pressure treatment method that rises is to press
State step to carry out:
P1: in 15～20min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 410 DEG C from room temperature, more right
Welding molectron on-load pressure, Stress control is 0.5～0.7Kgf/mm2, keep 5～10 minutes；
P2: in 20～25min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 820 DEG C from 410 DEG C, more right
Welding molectron on-load pressure, Stress control is 1.2～1.5Kgf/mm2, keep 70～90 minutes.
In the diffusion welding method of aforesaid tin bronze and steel welding construction, described step 4.: fill high pure nitrogen
Make vacuum diffusion bonding equipment in-furnace temperature decline, cool to 150 DEG C and shed top board load and promote top board；Temperature declines
To 60 DEG C of unlatching dropping valves, open fire door and take out welding molectron.
In the diffusion welding method of aforesaid tin bronze and steel welding construction, the material of described steel matrix and closed end cap
Material is consistent.
Aforesaid tin bronze is with the diffusion welding method of steel welding construction, and described tin bronze panel material is QSn10-2-3,
The material of steel matrix and closed end cap is 40CrNiMoA.
Compared with prior art, the present invention can realize the Diffusion Welding of tin bronze QSn10-2-3 and steel；The welding of the present invention
Structure makes in whole welding process, and Copper substrate is in confined space, it is thus possible to realize the composition of tin bronze QSn10-2-3 not
Run off, it is ensured that its stable material quality；The Welding Structure of the present invention so that in welding process Copper substrate produce radial compressive stress,
Owing to there is radially compressive pre-stress, the effect of thermal stress can be weakened during post weld heat treatment, it is to avoid Copper substrate is along brilliant
Cracking；The present invention can eliminate the casting flaw of tin bronze QSn10-2-3 to a certain extent.
Accompanying drawing explanation
Fig. 1 is the weldment installation diagram of the present invention；
Fig. 2 is confined state schematic diagram of the present invention；
Fig. 3 be the present invention welding after schematic diagram；
Fig. 4 is joint metallurgical microscopic sheet 200X (non-corrosion treatmentCorrosion Science) Contrast on effect schematic diagram after Tempering and Quenching；
Fig. 5 is Copper substrate metallography microscope picture 50X (corrosion treatmentCorrosion Science) Contrast on effect schematic diagram after Tempering and Quenching；
Fig. 6 is conventional Diffusion Welding mechanism map.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings, but is not intended as depending on restriction of the present invention
According to.
Embodiment.A kind of tin bronze and the diffusion welding method of steel welding construction, it is characterised in that enter in the steps below
OK:
1. according to the multiple parts of figure paper conversion, the solder side of multiple parts is carried out oil removing derust process laggard luggage join shape
Becoming welding molectron, multiple parts include steel matrix, tin bronze plate and closed end cap；
2. welding molectron is put in the middle of the lower supporting plate in vacuum diffusion bonding equipment burner hearth, weld molectron and prop up
Separate with graphite paper between fagging；
3. by the vacuum degree control in vacuum diffusion bonding equipment 1.0 × 10-3～1.0 × 10-4Pa, by a liter gentleness
Pressurized treatments；
4. lower the temperature, pickup.
The bottom surface of the groove of described steel matrix is the junction to be welded of circular flat, and periphery is taper seat, closed end cap interior
Bottom surface, portion and sidewall coordinate with tin bronze plate, and exterior side wall is the taper seat coordinated with steel matrix periphery, and in bottom radially
It is provided with a steam vent.
Tin bronze plate uses (QSn10-2-3)；Steel matrix and closed end cap are 40CrNiMoA.
Described step 1. in assembly method be tin bronze plate to be put in the groove of steel matrix, between solder side add
Closed end cap with groove, as welding transition layer, is covered on tin bronze plate by pure nickel paper tinsel, obtains the welding molectron assembled.
The described gentleness pressure treatment method that rises is to carry out in the steps below:
P1: in 15～20min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 410 DEG C from room temperature, more right
Welding molectron on-load pressure, Stress control is 0.5～0.7Kgf/mm2, keep 5～10 minutes；
P2: in 20～25min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 820 DEG C from 410 DEG C, more right
Welding molectron on-load pressure, Stress control is 1.2～1.5Kgf/mm2, keep 70～90 minutes.
Described step is 4.: fills high pure nitrogen and makes vacuum diffusion bonding equipment in-furnace temperature decline, cools to 150 DEG C
Shed top board load and promote top board；At a temperature of drop to 60 DEG C of unlatching dropping valves, open fire door and take out welding molectron i.e.
Become.
The principle of the invention can be as follows: as described in Fig. 1-3, and the present invention is to solve tin bronze (QSn10-2-3) and steel
(40CrNiMoA) method of post weld heat treatment cuprio cracking, depends on a kind of Welding Structure, its structural design of fittings such as Fig. 2 institute
Showing, in welding process, equipment applies a vertical pressure to closed end cap A upper surface, and under the effect of temperature and power, A is downward
Displacement, because C (steel matrix with groove) is to A limited location effect, produces extruding between the two, and this extruding produces certain deformation and makes
Obtaining A and the face of cylinder of B (tin bronze plate) first produces the effect of radial force, this effect makes again B intrinsic silicon produce compressive stress,
And the generation of Copper substrate internal compressive stress, it is to design this welded original intention, because the existence of this compressive stress, at postwelding heat
The effect of thermal stress can be weakened, it is to avoid Copper substrate intergranular crack during reason.
The present invention is to solve tin bronze (QSn10-2-3) and steel (40CrNiMoA) postwelding heat by design Welding Structure
The method processing cuprio cracking, specifically implements according to following steps:
Welding structural element shown in step 1, Fig. 1, and process all parts respectively according to drawing requirement, including closed end cap
A (prevent copper material from exposing makes ingredients from lossing realize Copper substrate generation radial compression effect simultaneously), tin bronze plate B and band groove steel
Matrix C, steel matrix C concave bottom with groove is circular flat, is junction to be welded, and periphery is taper seat, its frustoconical bevel angle with
The outer conical surface angle of closed end cap A is consistent, is radially provided with an exhaust hole, in order in welding process bottom closed end cap
Gas between A, B is discharged.
Assemble according still further to structure shown in Fig. 2, and first add one layer of pure nickel paper tinsel in band groove steel matrix C bottom surface and put into stannum
Bronze sheet B, then put after one layer of pure nickel paper tinsel by closed end cap lid thereon on tin bronze plate, rotate closed end cap A by hand so that it is
Upper surface is the most parallel with the lower surface of band groove steel matrix.
Step 2, shove charge: construction package step 1 assembled puts into vacuum diffusion bonding stove, for preventing weldment and setting
Standby pressing plate welds adhesion, it is necessary to separate with graphite paper.
Step 3, welding: utilize set-up of control system corresponding vacuum diffusion bonding parameter, in remaining soldering furnace
Vacuum degree control is 1.0 × 10-3～1.0 × 10-4Between Pa, and carry out the intensification of vacuum welding according to the following two stage, add
Press through process control:
3.1) in 15 minutes, make to weld furnace temperature be uniformly increased to 410 DEG C from room temperature, load simultaneously and make welding equipment pair
The pressure of test specimen reaches 0.7Kgf/mm2, keep 8 minutes；
3.2) making to weld furnace temperature in 25 minutes and be uniformly increased to 820 DEG C from 410 DEG C, welding equipment is to test specimen simultaneously
Pressure reaches 1.5Kgf/mm2, it is incubated 75 minutes.
Or
3.1) in 20 minutes, make to weld furnace temperature be uniformly increased to 410 DEG C from room temperature, load simultaneously and make welding equipment pair
The pressure of test specimen reaches 0.5Kgf/mm2, keep 10 minutes；
3.2) making to weld furnace temperature in 20 minutes and be uniformly increased to 820 DEG C from 410 DEG C, welding equipment is to test specimen simultaneously
Pressure reaches 1.2Kgf/mm2, it is incubated 85 minutes.
Step 4, in stove, fill high pure nitrogen cool to 150 DEG C and shed top board load and promote top board；Cool to
60 DEG C, the weldment welded being taken out vacuum brazing stove, then air cooling is to room temperature, removes the graphite paper of adhesion on test specimen and is
Become.
Welding molectron is carried out line cutting in the middle part of tin bronze plate, i.e. can get the workpiece that two pieces diffusion welding (DW) connects.
Use the traditional structure (constituting as shown in Figure 6) of sheet material welding, this structure welding tin bronze (QSn10-2-3) and steel
(40CrNiMoA), there is tin bronze composition serious phenomenon run off at temperature and fine vacuum effect so that material capability is because becoming
Shunting is lost and is destroyed, and there is the part of reciprocating forces as applying working condition, it is necessary to be adjusted steel matrix processing, with
Improve its intensity and toughness, and normal welding structure gained weldment in heat treatment process because of the generation of thermal stress, Copper substrate without
Method avoids intergranular crack phenomenon, and Figure 4 and 5 are the joint after the present invention and traditional welding structure weldment heat treatment and Copper substrate metallographic
Picture effect comparison diagram, it appeared that crackle results from crystal boundary.
Fig. 2 is the Welding Structure of the present invention, and this structure copper is closed by base steel in whole welding process, with the external world every
Absolutely, so may insure that its composition does not runs off so that it is material capability is maintained, wherein the processing of closed end cap bottom portion of groove side
One steam vent, this hole primarily serves the purpose of the gas when welding and discharges, it is to avoid gas is suppressed between copper coin and closed end cap, affects copper
Plate upper surface and the Diffusion Welding of closed end cap bottom portion of groove.Simultaneously because be circular cone between closed end cap lateral wall and steel matrix
Face coordinates, and this structure makes that welding process Copper substrate is internal produces compressive stress, this stress state follow-up make Tempering and Quenching time,
Thermal stress can be played and offset the effect reduced so that the understrressing that heat treatment produces is so that cuprio grain boundary separation.Fig. 4 and
5 is the joint after the present invention and traditional welding structure weldment heat treatment and Copper substrate metallograph effect contrast figure, and the present invention is not
Find Copper substrate intergranular crack.
Utilize the Welding Structure of the present invention, it can be ensured that the material composition of tin bronze (QSn10-2-3) does not runs off so that it is property
Can be maintained in whole work flow, and cuprio during steel heat treatment is not ftractureed, finally realize tin bronze (QSn10-2-3)
As friction pair material application on hydraulic plunger pump/motor correlated parts.Through various tests and actually used, it was demonstrated that stannum
Bronze (QSn10-2-3) material is meeting before hydraulic pump/motor has preferably application in high pressure, high-revolving working condition
Scape and boundless application value.
Claims (7)
1. a tin bronze and the diffusion welding method of steel welding construction, it is characterised in that carry out in the steps below:
1. according to the multiple parts of figure paper conversion, the solder side of multiple parts is carried out oil removing derust process laggard row be assembled to form weldering
Connecing molectron, multiple parts include steel matrix, tin bronze plate and closed end cap；
2. welding molectron is put in the middle of the lower supporting plate in vacuum diffusion bonding equipment burner hearth, welding molectron and gripper shoe
Between separate with graphite paper；
3. by the vacuum degree control in vacuum diffusion bonding equipment 1.0 × 10-3～1.0 × 10-4Pa, at liter gentle pressurization
Reason；
4. lower the temperature, pickup.
Tin bronze the most according to claim 1 and the diffusion welding method of steel welding construction, it is characterised in that described step
1. the assembly method in is, is put into by tin bronze plate in the groove of steel matrix, adds pure nickel paper tinsel as welding between solder side
Cross layer, closed end cap with groove is covered on tin bronze plate, obtain the welding molectron assembled.
Tin bronze the most according to claim 2 and the diffusion welding method of steel welding construction, it is characterised in that: described base steel
The bottom surface of the groove of body is the junction to be welded of circular flat, and periphery is taper seat, the inner bottom surface of closed end cap and sidewall and stannum
Bronze sheet coordinates, and exterior side wall is the taper seat coordinated with steel matrix periphery, and is radially provided with steam vent in bottom.
Tin bronze the most according to claim 1 and the diffusion welding method of steel welding construction, it is characterised in that described intensification
It is to carry out in the steps below with pressure treatment method:
P1: in 15～20min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 410 DEG C from room temperature, then to welding
Molectron on-load pressure, Stress control is 0.5～0.7Kgf/mm2, keep 5～10 minutes；
P2: in 20～25min, the temperature in vacuum diffusion bonding equipment is uniformly heating to 820 DEG C from 410 DEG C, then to welding
Molectron on-load pressure, Stress control is 1.2～1.5Kgf/mm2, keep 70～90 minutes.
Tin bronze the most according to claim 1 and the diffusion welding method of steel welding construction, it is characterised in that described step
The most 4.: fill high pure nitrogen and make vacuum diffusion bonding equipment in-furnace temperature decline, cool to 150 DEG C and shed top board load also
Promote top board；At a temperature of drop to 60 DEG C of unlatching dropping valves, open fire door and take out welding molectron.
6. according to the diffusion welding method of the tin bronze described in any one in Claims 1 to 5 Yu steel welding construction, its feature
It is: the material of described steel matrix is consistent with the material of closed end cap.
Tin bronze the most according to claim 6 and the diffusion welding method of steel welding construction, it is characterised in that: described stannum is blue or green
Copper sheet material be the material of QSn10-2-3, steel matrix and closed end cap be 40CrNiMoA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736511.9A CN106271033B (en) | 2016-08-28 | 2016-08-28 | A kind of diffusion welding method of tin bronze and steel welding construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736511.9A CN106271033B (en) | 2016-08-28 | 2016-08-28 | A kind of diffusion welding method of tin bronze and steel welding construction |
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| CN106271033B CN106271033B (en) | 2019-01-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552945A (en) * | 2017-09-20 | 2018-01-09 | 西安理工大学 | A kind of connection method of complicated shape aluminium bronze and stainless steel |
| CN107738030A (en) * | 2017-09-20 | 2018-02-27 | 西安理工大学 | A kind of law temperature joining method of aluminium bronze and stainless steel |
| CN110052695A (en) * | 2019-04-23 | 2019-07-26 | 合肥工业大学 | A kind of diffusion welding method of aluminium alloy liquid cooling component internal runner development |
| CN110396587A (en) * | 2019-09-03 | 2019-11-01 | 中航力源液压股份有限公司 | A kind of heat treatment tooling of copper steel dual alloy blank |
| CN111168204A (en) * | 2020-02-12 | 2020-05-19 | 西安理工大学 | Copper-steel dissimilar metal welding method with preset nickel sheets |
| CN113996905A (en) * | 2021-11-04 | 2022-02-01 | 江苏大学 | Diffusion connection method for immiscible dissimilar metals |
| CN114932303A (en) * | 2022-04-29 | 2022-08-23 | 庆安集团有限公司 | High-strength stainless steel copper alloy bimetal compounding method |
| CN117548998A (en) * | 2023-11-21 | 2024-02-13 | 华钛空天(北京)技术有限责任公司 | Preparation method, device, equipment and medium for thin-wall cavity rudder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552945A (en) * | 2017-09-20 | 2018-01-09 | 西安理工大学 | A kind of connection method of complicated shape aluminium bronze and stainless steel |
| CN107738030A (en) * | 2017-09-20 | 2018-02-27 | 西安理工大学 | A kind of law temperature joining method of aluminium bronze and stainless steel |
| CN110052695A (en) * | 2019-04-23 | 2019-07-26 | 合肥工业大学 | A kind of diffusion welding method of aluminium alloy liquid cooling component internal runner development |
| CN110396587A (en) * | 2019-09-03 | 2019-11-01 | 中航力源液压股份有限公司 | A kind of heat treatment tooling of copper steel dual alloy blank |
| CN111168204A (en) * | 2020-02-12 | 2020-05-19 | 西安理工大学 | Copper-steel dissimilar metal welding method with preset nickel sheets |
| CN113996905A (en) * | 2021-11-04 | 2022-02-01 | 江苏大学 | Diffusion connection method for immiscible dissimilar metals |
| CN114932303A (en) * | 2022-04-29 | 2022-08-23 | 庆安集团有限公司 | High-strength stainless steel copper alloy bimetal compounding method |
| CN117548998A (en) * | 2023-11-21 | 2024-02-13 | 华钛空天(北京)技术有限责任公司 | Preparation method, device, equipment and medium for thin-wall cavity rudder |
| CN117548998B (en) * | 2023-11-21 | 2024-05-07 | 华钛空天(北京)技术有限责任公司 | Preparation method, device, equipment and medium for thin-wall cavity rudder |
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